摘要
铬污染对环境和人类健康的危害日益严重,Cr(Ⅵ)和Cr(Ⅲ)是最常见的形态。与Cr(Ⅲ)相比,Cr(VI)毒性更大,更容易被人体吸收,对人体危害更大。因此,将有毒Cr(Ⅵ)转化为Cr(Ⅲ)是一种公认的铬解毒策略。从土壤中分离出一株能耐受高浓度Cr(Ⅵ),并对Cr(Ⅵ)具有较高去除作用的菌株,命名为FDR11。该菌株表现出较强的盐浓度、pH值和温度适应性。FDR11在24 h内能将0.5 mmol/L Cr(Ⅵ)完全去除,在2.5 mmol/L浓度的Cr(Ⅵ)溶液中,去除率仍能达到55%。此研究发现的FDR11可以作为铬污染生物修复的高活性菌株。
Chromium contamination has been an increasing threat to the environment and to human health.Cr(VI)and Cr(III)are the most common states of chromium.However,compared with Cr(III),Cr(VI)is more toxic and more easily absorbed,therefore,it is more harmful to human beings.Therefore,the conversion of toxic Cr(VI)into Cr(III)is an accepted strategy for chromium detoxification.Here,we isolated a strain with high Cr(VI)tolerance and high Cr(VI)removal from the soil,named FDR11.The strain showed strong adaptability to salt concentration,pH value and temperature.FDR11 can completely remove 0.5mmol/L Cr(VI)in 24 hours,and the removal rate can still reach 55%in 2.5mmol/L Cr(VI)solution.FDR11 found in this study can be used as a highly active bioremediation strain for chromium contamination.
作者
饶圣宏
刘磊
胡建国
Rao Shenghong;Liu Lei;Hu Jianguo(School of Nursing,Anhui Sanlian University,Hefei City,Anhui Province 230601;Anhui Province Key Laboratory of Medical Physics and Technology,Center of Medical Physics and Technology,Hefei Institutes of Physical Science,Chinese Academyof Sciences,Hefei City,Anhui Province 230031)
出处
《黄河科技学院学报》
2021年第11期82-87,共6页
Journal of Huanghe S&T College
基金
安徽省高校优秀青年人才支持计划项目(gxyq2019142)。
